diff --git a/tests/ui/sanitizer/thread.rs b/tests/ui/sanitizer/thread.rs
index 566774d6b1d64..9d9ad6ee51867 100644
--- a/tests/ui/sanitizer/thread.rs
+++ b/tests/ui/sanitizer/thread.rs
@@ -20,6 +20,7 @@
 //@ error-pattern: Location is heap block of size 4
 //@ error-pattern: allocated by main thread
 
+#![feature(raw_ref_op)]
 #![feature(rustc_private)]
 extern crate libc;